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Cheap flights from London to Southeast Asia from €328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Southeast Asia departing on 17/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London to Southeast Asia

Cheap return flights

Enter your travel dates to find the best prices.
Air China Logo
22:40 - 00:10
LHR
-
BKK
19h 30m
1 stop
Air China Logo
18:20 - 20:15
BKK
-
LHR
31h 55m
1 stop
€471Air China
Tue, 12 May - Mon, 25 May
China Eastern Logo
21:00 - 00:55
LHR
-
BKK
20h 55m
1 stop
China Eastern Logo
02:10 - 18:40
BKK
-
LHR
22h 30m
1 stop
€474China Eastern
Mon, 2 Mar - Sun, 29 Mar
China Eastern Logo
21:00 - 22:25
LHR
-
BKK
18h 25m
1 stop
China Eastern Logo
19:55 - 17:30
BKK
-
LHR
28h 35m
1 stop
€477China Eastern
Mon, 9 Mar - Sat, 21 Mar
China Eastern Logo
21:00 - 22:25
LHR
-
BKK
18h 25m
1 stop
China Eastern Logo
21:55 - 18:40
BKK
-
LHR
26h 45m
1 stop
€478China Eastern
Mon, 9 Mar - Tue, 31 Mar
Shenzhen Airlines Logo
21:10 - 01:40
LHR
-
MNL
20h 30m
1 stop
Shenzhen Airlines Logo
02:55 - 19:50
MNL
-
LHR
23h 55m
1 stop
€565Shenzhen Airlines
Wed, 11 Mar - Fri, 3 Apr
Gulf Air Logo
10:35 - 12:50
LGW
-
SIN
18h 15m
1 stop
Gulf Air Logo
20:00 - 06:30
SIN
-
LGW
18h 30m
1 stop
€567Gulf Air
Sun, 1 Mar - Tue, 17 Mar
Shenzhen Airlines Logo
22:05 - 01:40
LHR
-
MNL
20h 35m
1 stop
Shenzhen Airlines Logo
02:55 - 20:00
MNL
-
LHR
24h 05m
1 stop
€575Shenzhen Airlines
Fri, 17 Apr - Thu, 14 May
China Southern Logo
22:00 - 16:50
LHR
-
MNL
34h 50m
1 stop
China Southern Logo
17:55 - 18:35
MNL
-
LHR
32h 40m
2 stops
€603China Southern
Mon, 9 Mar - Sun, 22 Mar
Air India Logo
14:00 - 21:50
LHR
-
MNL
24h 50m
1 stop
Air India Logo
22:55 - 20:00
MNL
-
LHR
28h 05m
1 stop
€614Air India
Thu, 9 Apr - Wed, 6 May
Air India Logo
13:15 - 21:50
LHR
-
MNL
25h 35m
1 stop
Air India Logo
22:55 - 11:30
MNL
-
LHR
19h 35m
1 stop
€615Air India
Tue, 21 Apr - Tue, 12 May

Etihad Airways flights from London to Southeast Asia

Our best Etihad Airways deals on London to Southeast Asia flight tickets
Etihad Airways
22 Feb
LHR13:55London Heathrow
26h 30m
1 stop
BKK23:25Bangkok Suvarnabhumi
16 Mar
BKK08:55Bangkok Suvarnabhumi
28h 45m
1 stop
LHR06:40London Heathrow
€562
Etihad Airways
19 Feb
LHR19:20London Heathrow
21h 05m
1 stop
BKK23:25Bangkok Suvarnabhumi
14 Mar
BKK09:25Bangkok Suvarnabhumi
28h 15m
1 stop
LHR06:40London Heathrow
€577
Etihad Airways
20 Feb
LHR08:50London Heathrow
31h 35m
1 stop
BKK23:25Bangkok Suvarnabhumi
13 Mar
BKK02:55Bangkok Suvarnabhumi
34h 45m
1 stop
LHR06:40London Heathrow
€600

China Eastern flights from London to Southeast Asia

Our best China Eastern deals on London to Southeast Asia flight tickets
China Eastern
2 Mar
LHR21:00London Heathrow
24h 05m
1 stop
BKK04:05Bangkok Suvarnabhumi
15 Mar
BKK19:05Bangkok Suvarnabhumi
29h 25m
1 stop
LHR17:30London Heathrow
€474
China Eastern
9 Mar
LHR21:00London Heathrow
19h 55m
1 stop
BKK23:55Bangkok Suvarnabhumi
21 Mar
BKK19:05Bangkok Suvarnabhumi
29h 25m
1 stop
LHR17:30London Heathrow
€477
China Eastern
9 Mar
LHR21:00London Heathrow
21h 55m
1 stop
BKK01:55Bangkok Suvarnabhumi
1 Apr
BKK05:05Bangkok Suvarnabhumi
19h 35m
1 stop
LHR18:40London Heathrow
€478

momondo Fare Finder

 
Customise your flight search to find flights from London to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 6 February 2026.
Use the filters below to find and compare flights from London to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 12/5

22:40-00:10

1 stop19h 30m

Bangkok Suvarnabhumi

Mon 25/5

18:20-20:15

1 stop31h 55m

€471

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 2/3

21:00-00:55

1 stop20h 55m

Bangkok Suvarnabhumi

Sun 29/3

02:10-18:40

1 stop22h 30m

€474

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 9/3

21:00-22:25

1 stop18h 25m

Bangkok Suvarnabhumi

Sat 21/3

19:55-17:30

1 stop28h 35m

€477

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 9/3

21:00-22:25

1 stop18h 25m

Bangkok Suvarnabhumi

Tue 31/3

21:55-18:40

1 stop26h 45m

€478

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Wed 11/3

21:10-01:40

1 stop20h 30m

Manila Ninoy Aquino Intl

Fri 3/4

02:55-19:50

1 stop23h 55m

€565

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 1/3

10:35-12:50

1 stop18h 15m

Singapore Changi

Tue 17/3

20:00-06:30

1 stop18h 30m

€567

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Fri 17/4

22:05-01:40

1 stop20h 35m

Manila Ninoy Aquino Intl

Thu 14/5

02:55-20:00

1 stop24h 05m

€575

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Mon 9/3

22:00-16:50

1 stop34h 50m

Manila Ninoy Aquino Intl

Sun 22/3

17:55-18:35

2 stops32h 40m

€603

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Thu 9/4

14:00-21:50

1 stop24h 50m

Manila Ninoy Aquino Intl

Wed 6/5

22:55-20:00

1 stop28h 05m

€614

LondonManila

LHR - MNL

LHRMNL

London Heathrow

Tue 21/4

13:15-21:50

1 stop25h 35m

Manila Ninoy Aquino Intl

Tue 12/5

22:55-11:30

1 stop19h 35m

€615

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Southeast Asia from

How to get the cheapest flight ticket from London to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Southeast Asia?

The cheapest month to fly to Southeast Asia from London is in May. Flight prices, which tend to average around €448, are often lower during this time because this is during the off-season. If you’re not able to fly to Southeast Asia in May, then September is your next best option. Flight prices from London to Southeast Asia during September average around €616.

What is the cheapest day to depart on your flight to Southeast Asia?

The cheapest day to depart from London to Southeast Asia is on a Wednesday. Travellers who choose to depart for Southeast Asia on a Wednesday will often find tickets for as low as €782. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €1,130. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

What is the cheapest time of day to depart on your flight to Southeast Asia?

Our most recent data shows that the best time of day to fly to Southeast Asia is in the evening. Flights from London to Southeast Asia during this time can be as low as €845. Flights to Southeast Asia are more costly in the morning, with an average ticket price of €852. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest London to Southeast Asia flight route?

Fly from London Heathrow to Bangkok Suvarnabhumi for the best London - Southeast Asia flight prices

How far in advance should I book a flight to Southeast Asia?

You are more likely to see cheaper flights to Southeast Asia from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around €794 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from London for as low as €742 on momondo.

What cabin class options are available on London to Southeast Asia flights?

There are 3 cabin classes available to choose from on London to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London to Southeast Asia.

Cheap London to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Southeast Asia

Fastest flight time

11h 40m

Direct flights

Every day

Airports in Southeast Asia

295 airports
The fastest flight from London to Southeast Asia takes 11h 40m
Direct flights go from London to Southeast Asia every day.
There are 295 airports in Southeast Asia. From London there are direct flights to Bangkok Suvarnabhumi (BKK).
Search flight deals

  • When did momondo last update prices for flights from London to Southeast Asia?

    Prices for flights from London to Southeast Asia refresh daily.

  • How many operators does momondo search for flights from London to Southeast Asia?

  • How old do you have to be to fly from London to Southeast Asia?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Southeast Asia.

  • What documentation or ID do you need to fly to Southeast Asia?

    The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Southeast Asia?

Best airlines flying from London to Southeast Asia

Compare and see reviews for airlines that fly from London to Southeast Asia with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom €439Free CancellationRating
7.2
138 reviews
Search Air China flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Asia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Southeast Asia . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Southeast Asia with flexible booking policies on momondo?

All flight searches from London to Southeast Asia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Southeast Asia?

momondo provides multiple filters to help you find the best flight to Southeast Asia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Southeast Asia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Southeast Asia

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Popular flights according to clicks in the last 7 days on momondo
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